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authorZhang Rui <rui.zhang@intel.com>2012-06-27 10:11:52 +0400
committerZhang Rui <rui.zhang@intel.com>2012-09-24 10:44:37 +0400
commitb5e4ae620b06274981781aeadc2aea50b507f7fb (patch)
tree2b0175b36cafe5b753510e6c05cb41ec301f35fc
parentcddf31b3b293fd20358ea506f22445611425811f (diff)
downloadlinux-b5e4ae620b06274981781aeadc2aea50b507f7fb.tar.xz
Thermal: List thermal_instance in thermal_cooling_device.
List thermal_instance in thermal_cooling_device so that cooling device can know the cooling state requirement of all the thermal instances. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
-rw-r--r--drivers/thermal/thermal_sys.c7
-rw-r--r--include/linux/thermal.h1
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 288437651da5..70045c12d7df 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -57,6 +57,7 @@ struct thermal_instance {
char attr_name[THERMAL_NAME_LENGTH];
struct device_attribute attr;
struct list_head tz_node; /* node in tz->thermal_instances */
+ struct list_head cdev_node; /* node in cdev->thermal_instances */
};
static DEFINE_IDR(thermal_tz_idr);
@@ -878,8 +879,10 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
result = -EEXIST;
break;
}
- if (!result)
+ if (!result) {
list_add_tail(&dev->tz_node, &tz->thermal_instances);
+ list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
+ }
mutex_unlock(&tz->lock);
if (!result)
@@ -915,6 +918,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
list_del(&pos->tz_node);
+ list_del(&pos->cdev_node);
mutex_unlock(&tz->lock);
goto unbind;
}
@@ -984,6 +988,7 @@ thermal_cooling_device_register(char *type, void *devdata,
}
strcpy(cdev->type, type);
+ INIT_LIST_HEAD(&cdev->thermal_instances);
cdev->ops = ops;
cdev->device.class = &thermal_class;
cdev->devdata = devdata;
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index cb0b0e3ffd97..9ae378a4a555 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -94,6 +94,7 @@ struct thermal_cooling_device {
struct device device;
void *devdata;
const struct thermal_cooling_device_ops *ops;
+ struct list_head thermal_instances;
struct list_head node;
};